background image

LBC 3951/11 Ceiling Loudspeaker | 

3

 

*) Technical performance data acc. to IEC 60268-5

 

Technical Specifications
Electrical*

Max. Power 

9 W

Rated Power (PHC) 

6 W (6 - 3 - 1.5 - 0.75 W)

Sound Pressure Level at 6 W/1 W

(at 1 kHz, 1 m) 

96 / 88 dB (SPL)

Effective Frequency Range 

60 Hz to 18 kHz (-10 dB)

Opening Angle 

170° / 80°(at 1 kHz/4 kHz, -6 dB)

Rated Voltage 

100 V

Rated Impedance 

1667 ohm

Mechanical

Speaker Size 

101.6 mm (4 in)

Magnet Weight 

3.57 oz

Connection 2-pole 

push 

connector

Dimensions

Diameter 

160 mm (6.30 inch)

Max. Depth 

95 mm (3.74 inch)

Ceiling Thickness 

9 to 25 mm (0.35 to 0.98 inch)

Mounting Cut-Out 

145 mm (5.71 inch)

Color 

Off-white (RAL 9010)

Weight 

670 g (1.47 lb)

Environmental

Ambient Temperature 

-25°C to +55°C (-13°Fto 131°F)

Ordering Information

Model & Description

LBC 3951/11 Ceiling Loudspeaker

LBC 1256/00 EVAC Connection Adapter

3-pole screw connector

Summary of Contents for LBC 3951/11

Page 1: ...roduction The unit is supplied with a 100 V matching transformer with taps on the primary winding for full power half power quarter power and eighth power radiation The loudspeaker with special treated paper cone is IPx4 waterprotectedfromthefrontandcanbeappliedinhumidity environments for example bathrooms sauna s atriums and swimming pool areas Parts Included Certifications and Approvals All plas...

Page 2: ...ial tools The terminal blocks have provision for loop through wiring The transformerisdeliveredwiredfor6Wratedoutputpower but can easily be changed for other connections using the color coded wires and terminal block Dimensions in mm inch Circuit diagram Frequency response Polar diagram Quick reference table 01 Clamp 02 Matching Transformer 03 Terminal Block X Y Z Octave band Hz 125 250 500 1k 2k ...

Page 3: ...ted Voltage 100 V Rated Impedance 1667 ohm Mechanical Speaker Size 101 6 mm 4 in Magnet Weight 3 57 oz Connection 2 pole push connector Dimensions Diameter 160 mm 6 30 inch Max Depth 95 mm 3 74 inch Ceiling Thickness 9 to 25 mm 0 35 to 0 98 inch Mounting Cut Out 145 mm 5 71 inch Color Off white RAL 9010 Weight 670 g 1 47 lb Environmental Ambient Temperature 25 C to 55 C 13 Fto 131 F Ordering Infor...

Page 4: ...180 security sales us bosch com http www boschsecurity us Europe Middle East Africa Bosch Security Systems B V P O Box 80002 5600 JB Eindhoven The Netherlands Phone 31 0 40 27 83955 Fax 31 0 40 27 86668 emea securitysystems bosch com http www boschsecurity com Asia Pacific Bosch Security Systems Pte Ltd 38C Jalan Pemimpin Singapore 577180 Phone 65 6319 3450 Fax 65 6319 3499 apr securitysystems bos...

Reviews: